Ensure the machine is correctly grounded by a professional to avoid fatal electric shocks. :
Thread the wire through the inlet guide tube, over the drive roller groove, and into the torch liner inlet.
Reinstall the retaining nut. Do not overtighten it; the spool must turn smoothly but stop without unraveling when wire feeding ceases. Feeding the Wire Through the Torch Release the pressure arm on the wire drive roller. Cut off the distorted tip of the welding wire cleanly.